Some molecules act as both hormones and neurotransmitters. For example, norepinephrine is released into the blood by the adrenal glands as a hormone, but it also released as a neurotransmitter by sympathetic nerve endings.While there are similarities between these two chemical messengers, there are some obvious differences.or example, norepinephrine is released into the blood by the adrenal glands as a hormone, but it also released as a neurotransmitter by sympathetic nerve endings. While there are similarities between these two chemical messengers, there are some obvious differences.
What is the largest US bill printed? For public use in the US, $100 is currently the highest-value bill  issued.    At one time $500, $1,000, $5,000 and $10,000 were also printed.  Printing of all higherâ¦ denomination bills was suspended in 1945 due  to low demand.
Currently, the one hundred dollar bill is the highest denomination printed. At one time the US also issued $500, $1000, $5000, and $10,000 bills for general circulation, and p â¦ rinted special $100,000 bills for use inside the government.Printing was discontinued in 1945.  The present denominations of US currency in production are $1, $2,  $5, $10, $20, $50 and $100.    Printing of high-value notes was suspended in 1945, although the  last ones were all part of the 1934 series and carry that date  regardless of what year they were actually issued.